Initial commit

tasks/libposix/include/posix/libc-internal.h

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+/* Copyright (C) 1991,92,93,95,96,97,98,99,2000,2001 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, write to the Free
+   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+   02111-1307 USA.  */
+
+#ifndef _LIBC_INTERNAL_H
+#define _LIBC_INTERNAL_H 1
+
+#include <features.h>
+
+#ifdef __UCLIBC_BUILD_RELRO__
+# define attribute_relro __attribute__ ((section (".data.rel.ro")))
+#else
+# define attribute_relro
+#endif
+
+#ifdef __UCLIBC_HAS_THREADS_NATIVE__
+# define attribute_tls_model_ie __attribute__ ((tls_model ("initial-exec")))
+#endif
+
+/* Pull in things like __attribute_used__ */
+#include <sys/cdefs.h>
+
+/* --- this is added to integrate linuxthreads */
+/*#define __USE_UNIX98            1*/
+
+#ifndef __ASSEMBLER__
+# ifdef IS_IN_libc
+
+#  define __need_size_t
+#  include <stddef.h>
+
+/* sources are built w/ _GNU_SOURCE, this gets undefined */
+#ifdef __USE_GNU
+extern int __xpg_strerror_r (int __errnum, char *__buf, size_t __buflen);
+#else
+extern char *__glibc_strerror_r (int __errnum, char *__buf, size_t __buflen);
+#endif
+
+/* #include <pthread.h> */
+#  ifndef __UCLIBC_HAS_THREADS__
+#   define __pthread_mutex_init(mutex, mutexattr)         ((void)0)
+#   define __pthread_mutex_lock(mutex)                    ((void)0)
+#   define __pthread_mutex_trylock(mutex)                 ((void)0)
+#   define __pthread_mutex_unlock(mutex)                  ((void)0)
+#   define _pthread_cleanup_push_defer(mutex)             ((void)0)
+#   define _pthread_cleanup_pop_restore(mutex)            ((void)0)
+#  endif
+
+/* internal access to program name */
+extern const char *__uclibc_progname attribute_hidden;
+
+# endif /* IS_IN_libc */
+
+/* #include <alloca.h> */
+#include <bits/stackinfo.h>
+#if defined(_STACK_GROWS_DOWN)
+# define extend_alloca(buf, len, newlen) \
+  (__typeof (buf)) ({ size_t __newlen = (newlen);			      \
+		      char *__newbuf = alloca (__newlen);		      \
+		      if (__newbuf + __newlen == (char *) buf)		      \
+			len += __newlen;				      \
+		      else						      \
+			len = __newlen;					      \
+		      __newbuf; })
+#elif defined(_STACK_GROWS_UP)
+# define extend_alloca(buf, len, newlen) \
+  (__typeof (buf)) ({ size_t __newlen = (newlen);			      \
+		      char *__newbuf = alloca (__newlen);		      \
+		      char *__buf = (buf);				      \
+		      if (__buf + __newlen == __newbuf)			      \
+			{						      \
+			  len += __newlen;				      \
+			  __newbuf = __buf;				      \
+			}						      \
+		      else						      \
+			len = __newlen;					      \
+		      __newbuf; })
+#else
+# warning unknown stack
+# define extend_alloca(buf, len, newlen) \
+  alloca (((len) = (newlen)))
+#endif
+
+#endif /* __ASSEMBLER__ */
+
+#endif /* _LIBC_INTERNAL_H */